Clock.



W. H. THOMPSON,

CLOCK.

APPLlCATlON FILED MAR. 15, 1915.

1,148,727. Patentd Aug. 3, 1915.

COLUMBIA PLAN'DGRAPH (IO-,WASHINOTON, D. C.

v UNITED STATES PATENT OFFICE.

W'ILLIAM H. THOMPSON, OF MEMPHIS, TENNESSEE, ASSIGNOR TO THOMPSON ELECTRIC CLOCK COMPANY, OF -MEMPHIS, TENNESSEE, A CORPORATION OF TENNESSEE.

CLOCK.

Specification of Letters Patent.

Patented Aug. 3, 1915.

Original application filed October 28, 1914, Serial No. 869,014. 'Divided and this application filed March 15,

' 1915. Serial No. 14,488.

. at Memphis, county of Shelby, and State of Tennessee, have invented'certain new and useful Improvements in Clocks, of which the 7 following is a specification.

This invention relates to clocks.

The present application is a division of my application, Serial No. 869,014, filed October 28, 191 1, for electric automobile clocks. I

While the subject-matter is particularly adapted for use as a part of an electric automobile clock constructed according to the disclosures of my said application, I do not limit myself to its use with the elements, constructions and combinations of the electric automobile clock of that application as the present improvements are susceptible of use in connection with any clock.

My object is to provide an improved construction and combination of parts in a clock, whereby any standard, self-contained watch or clock movement may be quickly, easily and securely connected to a clockframe and utilized as the movement therefor, thereby dispensing with the former practice of applying the movement of a clock as a part of the frame and of the complete clock structure.

Another object is to provide an improved construction and combination of parts, whereby any standard, self-contained watch or clock movement may be applied to a clock-frame and made ready for driving by the application of any motor or driving means, preferably electrically wound, external in relation thereto and utilized to directly drive the center wheel of the selfcontained movement.

I wish it understood, however, that in this respect, I set forth and claim the present invention as adapted for the application of such external driving power and I do not claim the combination of the self-contained movement with the external driving power, as that subject-matter is claimed in my application, Serial No. 869,014, filed October 28, 191 1. My present invention, however, comprehends the utilization of a self-contained watch or clock movement and the manner in which it is attached to or combined with the frame of a clock, as in this respect, the self-contained watch or clock movement may have its own self-contained driving power.

A practical embodiment of my invention is fully set forth hereinafter and the novel construction and combination of parts recited in the appended claims.

In the accompanying drawings: Figure 1 is a detail perspective of the front frameplate, and the watch or clock movement inrelative position; and Fig. 2, a section, bro.- ken away, showing the self-contained watch or clock movement held in position for use.

The clock-frame has a front plate 1 provided with dial at. 1 v

The ring 7 is secured to the rear side of the front plate 1 by pillars 3 which screw into the front plate 1 at 8 and whose shoulders 6 bear against the ring 7. The ring 7 is thus held firmly against the plate 1 without requiring other fastening means.

The inner, annular edge 9 overhangs a concavity 5 in the rear face of the plate 1.

The back plate 2 is secured to the reduced ends 3 of the pillars 3, but as this fastening constitutes no part of the present invention, further description thereof is unnecessary.

Any suitable, selfcontained standard watch or clock movement 10 having rabbeted edge 11 is received in the concavity 5 of the front plate 1 and overlapped by the inner, annular edge 9 of the ring 7 whereby the said movement 10 is firmly positioned in the concavity and clamped against the inner face of the plate 1.

The movement 10 may be completely selfcontained and self-driven in so far as the combination of the movement with the plate 1 and ring 7 is concerned and unless otherwise specified in my claims, they are to be understood as covering either a complete, self-driven movement 10 or, on the other hand, one which is driven by external power, as proposed in my application, Serial No. 869,104. If driven by external power, as for instance, by an electrically wound power mechanism, in that event, the main spring and the winding barrel are removed from' the movement 10 and the external power or driving means will be provided with a pinion adapted to enter the concavity let and to directly mesh with the periphery of the center wheel 15 of the movement 10, whereby such external driving power is applied to the center wheel 15 and the power im- 10 may be bodily removed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a clock, the combination with a frame member thereof, of a bodily remove able ring detachably secured to the rear face thereof, and a self-contained watch or clock movement whose frame is engaged by and solely held or secured to the frame member by said ring.

2. In a clock, the combination with a frame member thereof, of a bodily removable ring detachably secured to the rear face thereof, and a watch or clock movement whose dial plate is directly engaged by said ring and by it clamped against the rear face of the frame member.

3. In a clock, the combination with a. frame member thereof having a concavity or recess in its rear face, of a bodily removable ring detachably fastened to the rear face of the frame member and having its inner edge overhanging said concavity or recess, and a self-contained watch or clock movement whose dial plate is received in the concavity or recess and is directly engaged by said ring and by it clamped against the frame member.

In testimony whereof, I hereunto afiix my signature in presence of two witnesses.

WILLIAM H. THOMPSON.

IVitnesses:

FRANK F. DAvIs, J OHN W. FARLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

. Washington, D. G.

.7 Jan, 

